Standard Practice for Examination of Fiberglass Reinforced Plastic Fan Blades Using Acoustic Emission

SIGNIFICANCE AND USE
5.1 The AE examination method detects structurally significant flaws in FRP structures via test loading. The damage mechanisms that are detected in FRP include resin cracking, fiber debonding, fiber pullout, fiber breakage, delamination, and secondary bond failure.  
5.2 Flaws in unstressed areas will not generate detectable AE.  
5.3 Flaws located with AE may be examined by other methods.
SCOPE
1.1 This practice provides guidelines for acoustic emission (AE) examinations of fiberglass reinforced plastic (FRP) fan blades of the type used in industrial cooling towers and heat exchangers.  
1.2 This practice uses simulated service loading to determine structural integrity.  
1.3 This practice will detect sources of acoustic emission in areas of sensor coverage that are stressed during the course of the examination.  
1.4 This practice applies to examinations of new and in-service fan blades.  
1.5 This practice is limited to fan blades of FRP construction, with length (hub centerline to tip) of less than 3 m [10 ft], and with fiberglass content greater than 15 % by weight.  
1.6 AE measurements are used to detect emission sources. Other nondestructive examination (NDE) methods may be used to evaluate the significance of AE sources. Procedures for other NDE methods are beyond the scope of this practice.  
1.7 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

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Publication Date
30-Nov-2015
Current Stage
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E2076/E2076M − 15
Standard Practice for
Examination of Fiberglass Reinforced Plastic Fan Blades
1
Using Acoustic Emission
ThisstandardisissuedunderthefixeddesignationE2076/E2076M;thenumberimmediatelyfollowingthedesignationindicatestheyear
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This practice provides guidelines for acoustic emission
E543 Specification for Agencies Performing Nondestructive
(AE) examinations of fiberglass reinforced plastic (FRP) fan
Testing
blades of the type used in industrial cooling towers and heat
E650 Guide for Mounting Piezoelectric Acoustic Emission
exchangers.
Sensors
1.2 This practice uses simulated service loading to deter-
E750 Practice for Characterizing Acoustic Emission Instru-
mine structural integrity.
mentation
E976 GuideforDeterminingtheReproducibilityofAcoustic
1.3 This practice will detect sources of acoustic emission in
Emission Sensor Response
areas of sensor coverage that are stressed during the course of
E1067 PracticeforAcousticEmissionExaminationofFiber-
the examination.
glass Reinforced Plastic Resin (FRP) Tanks/Vessels
1.4 This practice applies to examinations of new and in-
E1106 Test Method for Primary Calibration of Acoustic
service fan blades. Emission Sensors
E1316 Terminology for Nondestructive Examinations
1.5 This practice is limited to fan blades of FRP
E2374 Guide for Acoustic Emission System Performance
construction, with length (hub centerline to tip) of less than 3
Verification
m [10 ft], and with fiberglass content greater than 15 % by
3
2.2 ASNT Documents:
weight.
SNT-TC-1A Recommended Practice for Nondestructive
1.6 AE measurements are used to detect emission sources. Testing Personnel Qualification and Certification
ANSI/ASNT CP-189 Standard for Qualification and Certifi-
Other nondestructive examination (NDE) methods may be
used to evaluate the significance ofAE sources. Procedures for cation of Nondestructive Testing Personnel
4
other NDE methods are beyond the scope of this practice. 2.3 Aerospace Industries Association Document:
NAS 410 Certification and Qualification of Nondestructive
1.7 Units—The values stated in either SI units or inch-
Testing Personnel
pound units are to be regarded separately as standard. The
5
2.4 ISO Standard:
values stated in each system may not be exact equivalents;
ISO 9712 Non-Destructive Testing—Qualification and Cer-
therefore,eachsystemshallbeusedindependentlyoftheother.
tification of NDT Personnel
Combining values from the two systems may result in non-
conformance with the standard.
3. Terminology
1.8 This standard does not purport to address all of the 3.1 Definitions—For definitions of terms used in this
safety concerns, if any, associated with its use. It is the
practice, see Terminology E1316.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bility of regulatory limitations prior to use.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
1
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
4
structive Testing and is the direct responsibility of Subcommittee E07.04 on Available fromAerospace IndustriesAssociation ofAmerica, Inc. (AIA), 1000
Acoustic Emission Method. WilsonBlvd.,Suite1700,Arlington,VA22209-3928,http://www.aia-aerospace.org.
5
Current edition approved Dec. 1, 2015. Published December 2015. Originally Available from International Organization for Standardization (ISO), ISO
approved in 2000. Last previous edition approved in 2010 as E2076 - 10. DOI: Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
10.1520/E2076_E2076M-15. Geneva, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2076/E2076M − 15
4. Summary of Practice applicable revision shall be specified in the contractual agree-
ment between the using parties.
4.1 This practice consists of subjecting individual FRP fan
blades to increasing load while monitoring with sensors that
6.3 Qualification of Nondestructive Agencies—If specified
are sensitive to acoustic
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2076/E2076M − 10 E2076/E2076M − 15
Standard Practice for
Examination of Fiberglass Reinforced Plastic Fan Blades
1
Using Acoustic Emission
This standard is issued under the fixed designation E2076/E2076M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This practice provides guidelines for acoustic emission (AE) examinations of fiberglass reinforced plastic (FRP) fan blades
of the type used in industrial cooling towers and heat exchangers.
1.2 This practice uses simulated service loading to determine structural integrity.
1.3 This practice will detect sources of acoustic emission in areas of sensor coverage that are stressed during the course of the
examination.
1.4 This practice applies to examinations of new and in-service fan blades.
1.5 This practice is limited to fan blades of FRP construction, with length (hub centerline to tip) of less than 3 m [10 ft], and
with fiberglass content greater than 15 % by weight.
1.6 AE measurements are used to detect emission sources. Other nondestructive examination (NDE) methods may be used to
evaluate the significance of AE sources. Procedures for other NDE methods are beyond the scope of this practice.
1.7 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated
in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the standard.
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
E543 Specification for Agencies Performing Nondestructive Testing
E650 Guide for Mounting Piezoelectric Acoustic Emission Sensors
E750 Practice for Characterizing Acoustic Emission Instrumentation
E976 Guide for Determining the Reproducibility of Acoustic Emission Sensor Response
E1067 Practice for Acoustic Emission Examination of Fiberglass Reinforced Plastic Resin (FRP) Tanks/Vessels
E1106 Test Method for Primary Calibration of Acoustic Emission Sensors
E1316 Terminology for Nondestructive Examinations
E2374 Guide for Acoustic Emission System Performance Verification
3
2.2 ASNT Documents:
SNT-TC-1A Recommended Practice for Nondestructive Testing Personnel Qualification and Certification
ANSI/ASNT CP-189 Standard for Qualification and Certification of Nondestructive Testing Personnel
4
2.3 Aerospace Industries Association Document:
NAS 410 Certification and Qualification of Nondestructive Testing Personnel
1
This practice is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.04 on Acoustic Emission
Method.
Current edition approved June 1, 2010Dec. 1, 2015. Published July 2010December 2015. Originally approved in 2000. Last previous edition approved in 20052010 as
E2076 - 05.E2076 - 10. DOI: 10.1520/E2076_E2076M-10.10.1520/E2076_E2076M-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
4
Available from Aerospace Industries Association of America, Inc. (AIA), 1000 Wilson Blvd., Suite 1700, Arlington, VA 22209-3928, http://www.aia-aerospace.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2076/E2076M − 15
5
2.4 ISO Standard:
ISO 9712 Non-Destructive Testing—Qualification and Certification of NDT Personnel
3. Terminology
3.1 Definitions—For definitions of terms used in this practice, see Terminology E1316.
4. Summary of Practice
4.1 This practice consists of subjecting individual FRP fan blades to increasing load wh
...

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